Android 检查WIFI是否可用的实现方法

public static boolean isWiFiActive(Context inContext) {
if (checkPermissions(inContext, "android.permission.ACCESS_WIFI_STATE")) {
Context context = inContext.getApplicationContext();
ConnectivityManager connectivity = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null) {
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null) {
for (int i = 0; i < info.length; i++) {
if (info[i].getTypeName().equals("WIFI")
&& info[i].isConnected()) {
return true;
}
}
}
}
return false;
} else {
Log.e("lost permission",
"lost--->android.permission.ACCESS_WIFI_STATE");

return false;
}
}

有些情况下，我们的应用需要在WIFI环境下下载数据或更新应用。那么如何判断WIFI是否可用呢？